Dish-washing machine.



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Patented June 11, 1912.

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l hull: |||||||I L. A. HAUSTBTTER.

l DISH WASHING MACHINE. APPLIoA'rIoN'nLm) un. 29, 1011.

Patented June 11, 1912.

3 SHEETS-SHEET 2..

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L. A. HAUSTETTER.

DISH WASHING MACHINE.

APPLICATION FILED Mmmm, 1911.

Patented June 11, 1912.

3 SHEETS-SHEET 3.

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LoUIs A. HAUSTETTER, oF CHICAGO, ILLINOIS.

DISH-WASHING MACHINE.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed March 29, 1911. Serial No. 617,759.

To all whom 'it may concern:

Be it known that I, LOUIS A. HAUSTETTER, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dish- Washing Machines, of which the following is a full, clear, and exact description.-

The invention relates to machines for washing dishes and designs to provide an improved machine by .which the dishes will be thoroughly cleansed and which has a great capacity, so that it will be particularly advantageous in hotels and restaurants where speedy dish-washing is desirable or necessary. The invention attains this object by providing means for subjecting the dishes to voluminous Abut inely divided sprays of liquid, the initial washing being for the purpose of removing all the refuse` and matter from theJ dishes and t-he subsequent spraying being for the vpurpose of rinsing them with clean water.l If the entire volume ofwater used in the machine was fresh water, the cost of maintenance would be too great to render the device of much practical value andv for that reason the invention makes provision for continuously circulating the water and deluging -the dishes. The sediment and grease is carried oli through an overflow and a small supply of fresh water is constantly added to cause the sediment and grease to overflow into the sewer. In practice it has been found that by causing large volumes of Water to be sprayed upon the dishes continuously and successively to wash and then to rinse them, the machine may be economically. operated, and will, furthermore, most thoroughly clean and wash the dishes.

The invention further designs to provide a dish-washing machine of improved construc. tion, in which the dishes will be rapidly and Ithoroughly cleansedl and through .which the dishes maybe readily'passed in' succession, and under successive sprays.

In the vdrawings Figure 1 is a central vertical longitudinal section of a washing ma chine embodying the invention. Fig. 2 is a section on line 2-2 of Fig. 1. Fig3 is a section on line 3-3 of Fig. 1. Fig. 4 is a view of the front end of the machine. Fig. 5 is a section on line 5--5 of Fig. 1 Fig. 6 is a side View of the upper portion of the machine. A

1 The inclosing case A of the machine lcomprises a base which has a horizontal bottom-1 portion 12 and inclined bottom-portions 13 and 14. A central transverse wall 15 divides the compartment in the base into tanks 16 and 17, and' separates the liquid in one end of the base from that i'n the other. Tank 16 is adapted to contain the initial washing water, and tank 17 contains the rinsing Water.. This wall 15 is of suliicient height to retain a large body of water in tank 17 and permits the overflow to pass into tank 16, the water-line of which is-slightly below the water-line in tank 17, and is maintained at the proper level by a wall 18 in tank 16 which controls the flow of the water and matter floating on the top thereof into a drain-pipe 19 which leads to the sewer. Above these tanks 16 and 17, extends achamber 21 through which the dishes are passed. These dishes areusually placed in suitable racks 22, which are adapted to travel on rails 23, which extend longitudinally from end to end of the upper portion of the case and between extensions or tables 24 and 25 at the ends thereof. These racks are adapted to be placed on table 24 and pushed into the machine through an enddoor 26 which is suitably mounted to slide vertically in guides 27. A counter weight 28 is connected to said door by a chain 29 to hold the door in raised posit-ion when a tray of dishes is to be pushed into the chamber 21. At. the exit-end, chamber 21 is closed by a double door 30, the members of which are hinged at their sides to swing about an inclined axis, so the doors will be automatie cally held close, but may be pushed open and outwardly by the trays in the machine. In operation the racks are successively fedinto the machine through door 26. By pushinga rack into the inlet-end, the entire series ofl trays will beadvanced, causing the rack adjacent the out let-end to be forced out of the machine through door 30.

In this machine one attendant or operator will be suiiicient to keep the machine supplied with dishes to be washed, because he may after inserting a tray and closing door '26 step around to the other end and remove the dishes which have been Washed and rinsed. A battle 32 is pivotally hung at its upper end, as at 33, and when door 26 is closed this batiie hangs approximately parallela-nd adjacent to the door, and the latter is provided with an abutment 34 which is adapted to strike'the battle as the door is raised and to tilt the baille inwardly so that rected inwardly and prevent the operator from being splashed with the water descending 1n chamber 21.

A hot-water supply-plpe 36 leads to tank 17, adjacent the bottom thereof, to supply a regulated quantity of water to the machine, being provided with a valve 37 by which the supply may beregulated, as well as cut off, when desired. A pipe 38 supplies steam to the tanks in the case and extends to, and terminates near, the bottom of tank 17, which contains the supply of rinsing water, or that which is. used for final washing. From tank 17 the hot water overflows into tank 16, which contains the supply of hot water for the initial washing. Screens 39 and 40 are removably he-ld above tanks 16 and 17 respectively, to catch the solid matter and refuse removed from the dishes, and are disposed below the dish-racks and above the liquid in the base. A screen 41 is also removably held above the bottom of tank 16 to prevent solid matter and sediment from passing to an intake pipe 42 which leads to a centrifugal pump 43. A pipe 44'y conducts the discharge from said pump to the top 45 of the case andpidischarges the water above a box embodying alarge Aspray-plate 46, which divides the stream of water entering the case under pressure, so that `all portions of the dishes above tank 16 will be thoroughly subjected to a downwardly rushing flood-like spray or divided stream. A screen 71 prevents refuse from entering the intake pipe 42. Pump 43 is continuously driven bya shaft .47, which is operated by a suitable motor 48 usually an electric motor. As a result of the construction the large body in tank 16 .provides a liquidsupply which will be forced bypump 43 to circulate continuously through the end of chamber 21 above tank 16 to deluge the dishes therein.

For convenlence 1n cleaning the .sprayplate 46 is mounted in a rame50 which is slidably sustained by angle-iron guides 49 which are secured to the top 45. 'This frame comprises imperorate sides 51, the same, 'together with plate 46, forming a box, and

l it will be understood that the volume of water enteringfrom pipe 44 will be, sufficient and under pressure to flood the\spray plate 46, and cause the water to ow through all ofthe perforations therein and through its entire area. Frame 50 with the sprayplate therein maybe removed through a" sultable door 53 in one of the side-walls 54 around chamber 21. Angle iron strips 56 are seairedi to the side walls, adjacent the dishes and cause the spray t0 be deflected.

and splashed inwardly and laterally.

After being' initially washed, the racks with the dishes therein, will be forced onwardly in succession, to bring the dishes lation of water :trom tank 17.

therein beneath a rinsing apparatus similar in construction to that for the initial washing. This apparatus comprises an intakepipe 60, communicating with the bottom of tank 17, a centrifuga-l pump 61 which is 'driven by motor-shaft 47 and forces liquid from tank 17 through a pipe 62 through top 45 of the case and onto a divider or spray-plate 63 which is similar in construction to plate 46 and is removable, in the same manner. A baile plate 64 is mounted 2 on and above each of the spray-plates 46 and 63, to distribute the stream of water over the spray plates. Resultantly, in transit through the case from one end to the other the dishes will be thoroughly rinsed subse quent to washing by the continuous circu- It will be understood that these pumps are of sutiicient force and capacity to circulate a large volume of water so that the dishes will be tho-roughly cleaned in a short period.- The case is supported by standards 70.

The operation of the improved machine will be as follows: The racks containing dishes to be washed, are successively fed into the machine through door 36 and in transit through chamber 2l in the case, they are successively washed and thoroughly rinsed and then pass out through door 30. As one rack is pushed into the case the one adjacent the door 30 will be'forced out. In practice it has been found that in the present machine the dishes will be washed about as fast as they can be fed into. the machine by an operator. When rst placed in the machine the dishes will be subjected to a forcible divided voluminous spray of hot water from tank 16. This'washing will remove the solids and refuserom the disheaandl screen 39 will catch the refuse. The water after passing over the dishes will descend into tank 416, carrying the grease andl finer particles of refuse. with it, and these will Y edly used. Overflow of the grease and floati Y ing refuse will be caused' by a supply of water owing from tank 16, over wall 15 and into tank 16. Tank 17 will be constantly supplied with water by pipe ,36, the supply being merely suiiicient to cause the grease` and fat to overow and pass out of tank 16. As each tray is advanced throughthe machine and after the dishes have been initially washed they will be thoroughly rinsed by the fresherv and cleaner water from` tank 17, the voluminous divided stream from plate 63 causing the dishes to be thoroughly' rinsed and all greasy matter to be removed therefrom. The regulated Asupply of water from 36 causes the waterv 1n tank 17 to ove ow into tank 16 and to carry the- -economic in its operation.

floating grease with it to tank 16 and thence to the drain pipe 19. It will be understood that the steam supplied through' pipe 38,

keeps the tanks and water hot.

.a 'regulated and comparatively -small addition of Water, so that the machine will be There are no moving parts in the machine so that there is no danger of breaking the dishes and large quantities of dishes may be quickly and thoroughly Washed and rinsed.

The lnvention is not to beunderstood as restricted to the details shown and described since these may be modified within the scope of the appended claims without departing from the spirit of the invention.

Having thus described the invention what I claim as new and desire to secure by Letters Patent is:

, 1. In la dish-Washing machine, the combination of a case having a plurality of tanks in its base, said tanksbeing adapted to discharge one into the other, means for supporting dishes in said case, a sprayin device for each tank disposed above the ishes and discharging into its tank only, means for forcing Water from each of said tanks` to its s raying device, .and means for supplying esh water to one of said tanks.

2. In a dish-washing machine, the combination of a case, a spraying-device at the top thereof comprising a box slidably mounted in said case and having a perforated bottom,

means for supporting racks beneath said device, and means for supplying water to said spraying-device.

LOUIS A. HAUSTETTER. Witnesses: i

FRED GERLACH, FRANK BEMM. 

